CN203151605U

CN203151605U - Network telephone

Info

Publication number: CN203151605U
Application number: CN 201320148723
Authority: CN
Inventors: 王自明; 蒋小松; 王勇; 蔡焕彩; 郭英健
Original assignee: Changzhou Guoguang Data Communication Co Ltd
Current assignee: Changzhou Guoguang Data Communication Co Ltd
Priority date: 2013-03-29
Filing date: 2013-03-29
Publication date: 2013-08-21
Anticipated expiration: 2023-03-29

Abstract

The utility model discloses a network telephone, which comprises a telephone transmitter, a telephone transmission terminal amplification filter circuit, a first double-pole double-throw switch, an incoming terminal amplification filter circuit, a telephone receiver, an enhanced voice module, a voice module, a core control module and a second double-pole double-throw switch; and a voice coding and decoding chip and a voice encryption decryption chip are integrated in the enhanced voice module. According to the utility model, the voice coding and decoding chip and the voice encryption decryption chip are integrated in the enhanced voice module through embedding, so that the network telephone enables voice intercommunication with a specific user or equipment on the basis of maintenance of an original network telephone function.

Description

A kind of networking telephone

Technical field

The utility model relates to a kind of networking telephone.

Background technology

Along with network technical development, utilize the packet switching network of voice over the Internet protocol (VOIP) will substitute public switched telephone network (PSTN) gradually.In the packet network telephony system, transmit leg audio frequency advanced row digitlization (AD) sampling, convert the digital code stream that is fit to the packet network transmission to through encryption algorithm again, by the packet network telephony protocol transmission to the recipient, the recipient is according to agreement, receive digital code stream after, adopt corresponding decoding algorithm to obtain digitize voice, pass through digital-to-analogue (DA) conversion again, obtain the analog voice that people's ear can be identified.

At present in the network telephone, voice coding/decoding algorithms commonly used for G.711, G.729, GSM, iLBC etc., its code check is 8kbps ~ 64kbps, and voice encryption carries out the encryption and decryption of voice by network both sides arranging key mode, realizes by dsp built-in algorithms and embedded system.Some specific occasion then must adopt the dedicated voice coding to come and other telephone sets or devices interconnect intercommunication, and voice must adopt the dedicated secret module that voice are encrypted the fail safe that transmission guarantees Content of Communication.Use in these digital telephones in the PSTN net, and in VOIP, temporarily also do not have relevant technical scheme to occur, therefore very be necessary to design a kind of networking telephone that can carry out voice intercommunication with specific user or equipment.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of networking telephone that can carry out voice intercommunication with specific user or equipment.

In order to solve the problems of the technologies described above, technical scheme provided by the utility model is: a kind of networking telephone comprises transmitter, send words end amplification filtering circuit, first double-point double-throw switch, callee amplification filtering circuit, receiver, enhancement mode voice module, voice module, kernel control module and second double-point double-throw switch; The output of described transmitter is electrically connected with the input that send words end amplification filtering circuit; The input of described receiver is electrically connected with the output of callee amplification filtering circuit; The described output of words end amplification filtering circuit and the input of callee amplification filtering circuit of sending is electrically connected with two cutter portions of first double-point double-throw switch respectively; Described enhancement mode voice module is electrically connected with two portions of throwing of a side of first double-point double-throw switch, and voice module is electrically connected with two portions of throwing of the opposite side of first double-point double-throw switch; Described enhancement mode voice module also is electrically connected with two portions of throwing of a side of second double-point double-throw switch; Described voice module also is electrically connected with kernel control module; Described kernel control module also is electrically connected with two cutter portions of second double-point double-throw switch; Be integrated with phonetic codec chip and voice encryption deciphering chip in the described enhancement mode voice module.

Described first double-point double-throw switch and second double-point double-throw switch are the numerical control switch; Described first double-point double-throw switch and second double-point double-throw switch are controlled by kernel control module.

Integrated phonetic codec chip comprises CMX7261 chip and/or low code check sound code communication phonetic codec chip in the described enhancement mode voice module.

Described kernel control module adopts the PXA270 chip.

After having adopted technique scheme, the utlity model has following beneficial effect: (1) the utility model is by the enhancement mode voice module of embedded integrated phonetic codec chip and voice encryption deciphering chip, make it keep to carry out voice intercommunication with specific user or equipment on the legacy network telephony feature basis.

(2) integrated phonetic codec chip comprises CMX7261 chip and/or low code check sound code communication phonetic codec chip in the enhancement mode voice module of the present utility model.The CMX7261 chip is except realizing G.711, G.729A, the conversation of CVSD easy way, can also realize code conversion between different coding.Low code check sound code communication phonetic codec chip can be realized sound code communications such as 300bps, 600bps, 1200bps, 2400bps, and networking telephone occupied bandwidth is littler, even converses in low-rate channel.

Description of drawings

Content of the present utility model is easier to be expressly understood in order to make, and according to specific embodiment also by reference to the accompanying drawings, the utility model is described in further detail, wherein below

Fig. 1 is structured flowchart of the present utility model.

Label in the accompanying drawing is:

Transmitter 1, send words ends amplification filtering circuit 2, first double-point double-throw switch 3, callee amplification filtering circuit 4, receiver 5, enhancement mode voice module 6, voice module 7, kernel control module 8, second double-point double-throw switch 9.

Embodiment

(embodiment 1)

See Fig. 1, the networking telephone of present embodiment comprises transmitter 1, send words end amplification filtering circuit 2, first double-point double-throw switch 3, callee amplification filtering circuit 4, receiver 5, enhancement mode voice module 6, voice module 7, kernel control module 8 and second double-point double-throw switch 9.

The output of transmitter 1 is electrically connected with the input that send words end amplification filtering circuit 2.The input of receiver 5 is electrically connected with the output of callee amplification filtering circuit 4.Send the output of words end amplification filtering circuit 2 and the input of callee amplification filtering circuit 4 to be electrically connected with two cutter portions of first double-point double-throw switch 3 respectively.Enhancement mode voice module 6 is electrically connected with two portions of throwing of a side of first double-point double-throw switch 3, and voice module 7 is electrically connected with two portions of throwing of the opposite side of first double-point double-throw switch 3.Enhancement mode voice module 6 also is electrically connected with two portions of throwing of a side of second double-point double-throw switch 9.Voice module 7 also is electrically connected with kernel control module 8.Kernel control module 8 also is electrically connected with two cutter portions of second double-point double-throw switch 9.Be integrated with phonetic codec chip and voice encryption deciphering chip in the enhancement mode voice module 6.First double-point double-throw switch 3 and second double-point double-throw switch 9 are the numerical control switch.First double-point double-throw switch 3 and second double-point double-throw switch 9 are by kernel control module 8 controls.Kernel control module 8 adopts the PXA270 chip.

Integrated phonetic codec chip comprises CMX7261 chip and/or low code check sound code communication phonetic codec chip in the enhancement mode voice module 6.The CMX7261 chip is except realizing G.711, G.729A, the conversation of CVSD easy way, can also realize code conversion between different coding.Low code check sound code communication phonetic codec chip can be realized sound code communications such as 300bps, 600bps, 1200bps, 2400bps, and networking telephone occupied bandwidth is littler, even converses in low-rate channel.

Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.

Claims

1. a networking telephone is characterized in that: comprise transmitter (1), send words end amplification filtering circuit (2), first double-point double-throw switch (3), callee amplification filtering circuit (4), receiver (5), enhancement mode voice module (6), voice module (7), kernel control module (8) and second double-point double-throw switch (9); The output of described transmitter (1) is electrically connected with the input that send words end amplification filtering circuit (2); The input of described receiver (5) is electrically connected with the output of callee amplification filtering circuit (4); The described output of words end amplification filtering circuit (2) and the input of callee amplification filtering circuit (4) of sending is electrically connected with two cutter portions of first double-point double-throw switch (3) respectively; Described enhancement mode voice module (6) is electrically connected with two portions of throwing of a side of first double-point double-throw switch (3), and voice module (7) is electrically connected with two portions of throwing of the opposite side of first double-point double-throw switch (3); Described enhancement mode voice module (6) also is electrically connected with two portions of throwing of a side of second double-point double-throw switch (9); Described voice module (7) also is electrically connected with kernel control module (8); Described kernel control module (8) also is electrically connected with two cutter portions of second double-point double-throw switch (9); Be integrated with phonetic codec chip and voice encryption deciphering chip in the described enhancement mode voice module (6).

2. a kind of networking telephone according to claim 1, it is characterized in that: described first double-point double-throw switch (3) and second double-point double-throw switch (9) are the numerical control switch; Described first double-point double-throw switch (3) and second double-point double-throw switch (9) are controlled by kernel control module (8).

3. a kind of networking telephone according to claim 1, it is characterized in that: integrated phonetic codec chip comprises CMX7261 chip and/or low code check sound code communication phonetic codec chip in the described enhancement mode voice module (6).

4. according to the described a kind of networking telephone of one of claim 1 to 3, it is characterized in that: described kernel control module (8) adopts the PXA270 chip.